Last Caribou Herd On U.S. Mainland 'Functionally Extinct', Experts SayThe last herd of southern mountain caribou -- known as gray ghosts -- has reportedly dwindled down to the point where wildlife experts are calling them "functionally extinct"
Panther Released Into The Wild Last Year Has DiedAn endangered Florida panther that was rescued as a kitten has died less than a year after being released back into the wild.

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